The situation for heat pump heating is dramatically different. 36 units of input power generate 100 units of useful heat because the heat pump acquires 67 units of ambient heat and loses only 3 units of incoming power. Efficiency is 287%. +...
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And district heating is even more efficient due to the economy of scale. 33 units of input power provide 100 units of useful heat, for 303% efficiency.
It's even better when you consider that district heating often has better sources of waste heat than just "ambient heat".
Odds are, you have industries in your town that are just dumping their waste heat into the air or water, & would appreciate getting paid for it instead of it being a cost.
I particularly like district heating that uses waste heat from thermal power plants because it can drive the overall efficiency above 90%, wringing every practical drop of useful energy out of the fuel.
I'm trying to get my neighbors to install heat pump hot water heaters in their apartments as the original ones fail but they get told a lot of myths by their plumbers
This was my experience as well. Our furnace died ~6 years ago and we should have bought a HP then, but did not know enough and were talked out of it. We put in a HP last year and it's worked very well for us. We save on the next cost of electricity and gas now.
How do you find the cold air effect around the HP water heater, just judging by what I’ve read about? And does it pump the collected water vapor outside?
I have mine in our basement. We don’t use the room very much except for storage, and it has the added bonus of dehumidifying the room. They installed hooked it up to the condenser pump from my HVAC so any collected water goes there.
I haven't installed one yet, but I don't notice it for my HP dryer. My hot water heater is in common hall so won't affect my apt, many of my neighbors have hot water heaters in their apartments
This feels like a microcosm of so many similar problems, e.g. wood construction instead of concrete construction, plant-based diets, etc. Folks are resistant to change and will conjure any kind of story to keep things the same.
Efficiency isn't the only metric, as technical reports show.
Academic studies can also be less able to quantify all components of the energy system. For example, the entire EU gas grid is switching to #hydrogen by law - the fact is no other form of seasonal #energystorage is possible
I’d argue that underplays HPs by quite a margin, a lot of A2W HPs are achieving 4-500% efficiency for a year. See the data at https://heatpumpmonitor.org
We recently installed a heat pump in the Hempcrete house we're building. The last 2 months COP has been 5.75. We will be releasing SCOP once we have a years worth of data. We're into the winter months now so expecting COP to drop for a little while but still amazing results! Heatpumps for the win!
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Odds are, you have industries in your town that are just dumping their waste heat into the air or water, & would appreciate getting paid for it instead of it being a cost.
Waste not, want not.
This century sure is gonna be complicated.
Academic studies can also be less able to quantify all components of the energy system. For example, the entire EU gas grid is switching to #hydrogen by law - the fact is no other form of seasonal #energystorage is possible
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